Combined crutch and chair.



Y S. J. JOHNSON.

COMBINED GRUTGH AND CHAIR.

APPLIOATION FILED JUNE 29, 1909.

979,959, Patented Dec. 27, 1910.

than;

SAMUEL J. JOHNSON, OF FORT WORTH, TEXAS, ASSIGNOR 0F ONE-HALF TO THOMASFINN, OF FORT WORTH, TEXAS.

COMBINED oRUroH AND CHAIR.

Specification of Letters Patent.

Patented 1360.27, 1910.

Application filed June 29, 1909. Serial No. 504,959.

To all whom it may concern:

Be it known that I, SAMUEL J. JOHNSON, a citizen of the United States,residing at Fort Worth, Texas, have invented certain new and usefulImprovements in a Combined Crutch and Chair, of which the following is aspecification.

My invention relates to crutches and chairs and more particularly to acrutch which may be converted into a chair, and the object is to providecrutches with certain simple and light and inexpensive attachments bywhich the crutch may be converted into a chair at the will of the user.

One object is to provide such crutch with attachments which will notincrease the weight of the crutch to any considerable extent and yetmake a substantial seat without impairing the usefulness of the crutch.

Other objects and advantages will be fully explained in the followingdescription and the invention will be more particularly pointed out inthe claims.

Reference is had to the accompanying drawings which form a part of thisapplication.

Figure 1 is a front elevation of the de vice as a crutch. Fig. 2 is aperspective view of the device used as a chair. Fig. 3 is a detail viewof the locking crank, being a sectional view of the crank and a portionof the crutch. Fig. 4 is a detail view of the lock for locking thedevice together in the use as a crutch. Fig. 5 is a horizontal section,taken along the line waa of Fig. 1, showing the metal lining of theframe pieces.

Similar characters of reference are used to indicate the same partsthroughout the several views.

This device has the usual frame, consisting of the bent bars 1 and 2 andthe arm rest 3. Instead of the usual cross-piece between frame pieces 1and 2, a shaft 4 is journaled in the frame pieces and provided with acrank 5 for turning the shaft 4. An additional frame, consisting of sidepieces 6 and 7, cross-bar 8 connecting the frame pieces 6 and 7 at oneend,'and a locking bar 9 connecting the frame pieces 6 and 7 at theother end. The frame pieces are strengthened by thin sheet metal onthree sides, as shown by Fig. 5, 10 indicating the metal is in the formof E-beams. Both frames are locked together by a spring pressed bolt orpin 11. The

frames are further locked together by the locking crank 5.

A piece of strong cloth or canvas or soft leather is attached to theshaft 4 and to the cross bar 8. By means of the crank 5, the cloth orcanvas 12 is wound on the shaft 4. The crank 5 has a longitudinal slot13 and the side of the crank next to the crutch frame is flush with theframe except along a cut out 14. A pin 15 is inserted or driven into thecrutch frame 1. The object of the cut-out 14 is to prevent the crank 5from coming in contact with the pin 15 which is for locking purposes.The crank 5 has a groove 16 in the side adjacent to the crutch frame.

The crank 5 is locked to and unlocked from the crutch frame piece 1 by asimple longitudinal movement of the crank 5 on the shaft journal 4, theslot 13 permitting longitudinal movement of the crank. As shown in Figs.1 and 3, the crank 5 is locked against movement, but by moving the crankvertically until the cut-out 14 comes even or registers with the pin 15the crank may be turned and thus turn the shaft 4 and the crank will notbe obstructed in its turning because the cut-out 14 makes a passage wayfor the crank.

The two frames of the crutch are pivotally connected together at 17 sothat the interior frame may be turned down to form the seat as shown inFig. 2.

The locking crank is utilized to lock the device for use as a crutch andalso for looking the device for use as a chair.

The canvas 12 is attached to the shaft 4 and to the cross bar 8. Thecross bar 8 is rigidly attached to the interior frame.

When the device is used for a chair the arm piece 3 forms one foot orbase for the chair and the bar 9 forms the other foot piece or base forthe chair. The canvas 12 forms the seat and also a connecting means,when unrolled, for holding the two frames in operative position for achair.

Having fully described my invention, what I claim as new and desire tosecure by Letters Patent, is,-

1. In a device of the character described, a crutch member provided witha shaft forming a handle, a frame pivotally mounted in said crutchmember, a flexible sheet attached to said shaft and to said frame, and alocking crank slidably engaging said shaft for Winding said sheet onsaid shaft and for locking said device in the form of a crutch.

2. In a device of the character described, a crutch member provided Witha shaft forming a handle, a frame pivotally mounted in said crutchmember and locked thereto, a flexible sheet attached to said shaft andto said frame, a pin in said crutch member, and

a locking crank slidably engaging said shaft 7 and cooperating with saidpin to lock said frame Within said crutch member, said sheet cooperatingwith said frame and crutch member to form a chair and said crank 00-operating ith said shaft and pin to lock- 15 said device in the form ofa chair.

In testimony whereof, I set my hand in the presence of two Witnesses,this 9th day t of June, 1909.

SAMUEL J. JOHNSON.

Witnesses:

A. L. JAcKsoN, B. J. LORKOWSKI.

